Hi, i store response time in a rrd. Sometimes there are NaN because of a timeout. Graphing the responsetime producing a break of the line. Instead of the break there should be displayed the timeout value. I tried to solve this with the following configuration:
rrdtool graph /tmp/icmp.png \ --title="ICMP Response Time" \ --vertical-label="Seconds" \ DEF:rtMills=/icmp.rrd:icmp:AVERAGE \ DEF:minRtMills=/icmp.rrd:icmp:MIN \ DEF:maxRtMills=/icmp.rrd:icmp:MAX \ CDEF:rt=rtMills,1000,/ \ CDEF:minRt=minRtMills,1000,/ \ CDEF:maxRt=maxRtMills,1000,/ \ CDEF:unknownpos=rt,UN,INF,UNKN,IF,/ \ CDEF:unknownneg=rt,UN,NEGINF,UNKN,IF,/ \ AREA:unknownpos#0000ff \ AREA:unknownneg#0000ff \ LINE1:rt#0000ff:"Response Time" \ GPRINT:rt:AVERAGE:" Avg \\: %8.2lf %s" \ GPRINT:rt:MIN:"Min \\: %8.2lf %s" \ GPRINT:rt:MAX:"Max \\: %8.2lf %s\\n" Result is an Error: "RPN Stack Underflow". Do anyone know what's wrong? Sincerely, Udo
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